Passiflora, Blue Passion Flower, Hardy Passion Flower, Passion Vine 'Blue Crown'

Passiflora caerulea

Family: Passifloraceae (pas-ih-flor-AY-see-ee) (Info)
Genus: Passiflora (pass-iff-FLOR-uh) (Info)
Species: caerulea (see-ROO-lee-uh) (Info)
Cultivar: Blue Crown
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Vines and Climbers

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun

Sun to Partial Shade





Foliage Color:

Unknown - Tell us


12-15 ft. (3.6-4.7 m)

15-20 ft. (4.7-6 m)


6-8 ft. (1.8-2.4 m)


USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Where to Grow:

Unknown - Tell us


Parts of plant are poisonous if ingested

Bloom Color:

Light Blue

Dark Blue

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

Bloom Size:

Unknown - Tell us

Bloom Time:

Blooms all year

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

From herbaceous stem cuttings

From softwood cuttings

From semi-hardwood cuttings

From hardwood cuttings

By air layering

By tip layering

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


This plant is said to grow outdoors in the following regions:

Fountain Valley, California

Huntington Beach, California

Hollywood, Florida

Ponte Vedra Beach, Florida

Winter Springs, Florida

Erath, Louisiana

Fort Worth, Texas

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Gardeners' Notes:


On Oct 27, 2017, lightyellow from Ponte Vedra Beach, FL wrote:

Very easy to grow. Mine is growing in unamended Florida soil, East-facing, and riddled with fallen stucco bits. The growth of it is fast without fertilizer but mine still gets defoliated completely by Gulf frit caterpillars.. so I don't really have to worry about mine taking over.
Very easy plant to share/propagate (like other passionflowers) because of the suckers.

My only negative comment is that it has yet to attract the attention of my zebra longwings. Zebra longwings eat maypop (native Purple passionflower) around here but perhaps not this species so I've been propagating a maypop vine too.


On Apr 29, 2012, Sheila_FW from Fort Worth, TX (Zone 8a) wrote:

I love this evergreen butterfly host plant!! It is hardy and easy to train for trellis purpose. It can get out of hand by spreading underneath the ground with roots. However that is when I simply dig and share.


On Jul 31, 2011, malignaki from Erath, LA wrote:

I picked up this vine in a box at Sam's Club believe it or not. It was about 5 inches long and looked pitiful but it was the only place I could find it. I purchased and planted it sometime around Mardi Gras (March?) 4 months down the road its about 8 feet high and flowering. The most beautiful thing I have ever seen! Very easy to take care of, just make sure you have plenty of room for it.